At 6:00, the hands are 180° apart. In the thirty minutes it takes the minute hand to reach the six, the hour hand will have advanced 15° from the six because it moves at a rate of ½° each minute.
They do not form any angle because they are on top of each other. However a straight line is considered to be 180 degrees and a circle 360 degrees.
It is 15 degrees.
The hour hand would be at 195 degrees and the minute hand at 180 degrees.
15 degrees, each number is separated by 30 degrees (360/12) so if it's a standard wall clock the hour hand will be halfway between 6 and 7 and the minute hand will be pointed at 6, therefore the angle created is half that between the numbers i.e. 15 degrees.
At 6:30, the hour hand is at 195 degrees, the minute hand is at 180 degrees, the second hand would be at 0 degrees. The hour and minute hands would also be 15 degrees apart.
Standard temperature is 0 degrees Celsius so you are looking for the elements that have a melting point above 0 degrees Celsius. The answer is 4 elements. Elements E, G, L, and Q.
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